Printing business machine



May 15 1945- .1. E. os'rLlNE y I 2,375,268

' PRINTING BUSINESS MACHINE Original Filed April 13,- 1942 6 Sheets-Sheet 1 JOHN E. OSTUNE- y BYZ-M I ATTORNEY May 15, .1945- J. E. osTLlNE PRINTING BUSINESS MACHINE 6 Sheets-Sheet 2 Original Filed Aprill, 1942 INVENTORQ JOHN E. osTLnNE B/ t4/4 ATTOR N EY May 15, 1945' J. E. OSTLINE PRINTING BUSINESS MACHINE original Filed'April 1s, 1942 nml Non

MU 15; 1945- J. E. osTLlNE 2,376,258

PRINTING BUSINESS MACHINE I Original Filed April 13, 19442 6 Sheets-Sheet 4 INVENTOR. JOHN E. vosmmz ATTOR NEY I e R Y 6 e 0 E 7 m MM M QW r EL 0 2 t WN U Mm l0 A im E m2 N 6 H /m w .A Q f E 9 m 1 W.

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5. oom 4 9 l 3:8 m mom r mm mm. wow 5 QN E QON EN @om y .vom f EN mom d @W om Original Filed April 13, 1942 6 Sheets-SheeiI 6 O INVENToR.

JOHN E osTLmE ATTORNEY g Patented May 15, 1945 PRINTING BUSINESS MACHINE 'L John E. Ostline, Chicago, Ill., assignor to Automatic Electric Laboratories, Inc., Chicago, Ill., a corporation of Delaware Original application April 13, 1942, Serial No.'

438,760, now Patent No. 2,360,789, dated October 17, 1944.

Divided and this application August 25, 1943, Serial No. 499,913

14 claims.

The `present invention relates to printing business machines and more particularly to such machines of the automatic printer or typewriter type. The present application is a division of my co-pending application Serial No. 438,760 led April 13, 1942, now Patent No. 2,360,789, granted October 17, 1944.

It is the object of the present invention to provide in a printing business machine, including a movable support for a supply of paper stock, improved electromechanical paper testing mechanism for detecting the normal'p'osition of the sup- ,l

ported supply of paperstock.

Another object of the invention is to provide in a printing business machine, including a support for a supply of paper stock, improved electromechanical paper mechanism for detecting the adequacy of the supported supply of paper stock.

A further object of the invention is to provide in a printing business machine, including a movable support for a supply of paper stock, improved electromechanical paper testing mechanism for detecting both the'normal position of and the adequacy of the supported supply of paper stock.

Further features of the invention pertain to the particular arrangement of the mechanical elements of the different mechanisms incorporated in the machine, whereby the above-outlined and additional operatingfeatures are attained.

The invention both as to its organization and method of operating, together with further objects and advantages thereof, will best. be understood by reference to the following specication taken in connection with the accompanying drawings, in which Figure 1 is a rear perspective view of a printing business machine constructed vention; Fig. 2 is a plan View, partly broken away, of the rear portion of the machine shown in Fig. 1; Fig. Bis a rear elevational view, partly broken away, of the machine; Fig. 4 is a side elevational view, partly broken away, of a paper porting and guiding mechanism and the paper44 cutting mechanism with reference to the platen and pressure rolls of the machine; Fig. 7 is a rear elevational view of paper position testing mechanism incorporated in the machine; and Fig. 8

. and arranged in accordance with the present inis a side elevational view, partly broken away, of the'mechanism shown in Fig. 7.

Referring now more particularly to Fig. 1 of the drawings there is illustrateda printing business machine I00 incorporating the features of the present invention. The illustrated embodiment'of the machine |00 is in the form of an automatic printer or typewriter of the type known as the Electromatic typewriter having the general construction and arrangement shown in U. S. Patent No. 1,777,055, Russell G. Thompson, granted September 30, 1930.

The machine |00 comprises an upper main frame I0|, a connected lower subframe |02 housing the power mechanism, av movable carriage |03 and a plurality of type levers |04. The power mechanism comprises the usual operating motor, power roll, clutch mechanism between the power roll and the type levers |04 and a plurality of operating keys. The subframe comprises casing structure .|05 receiving the operating motor; while the main frame |0I supports a removable type hood |06 protecting the type levers |04. Also the main frame IIJI carries a plurality of operating magnets adapted to control the associated operating keys and supports a removable magnet hood |01 protecting the operating magnets. The carriage |03 comprises the usual assembly including spaced-apart end walls |08 rotatably supporting a removable platen roll |09 provided with a resilient covering, formed of rubber or the like, and cooperatingwith type levers Further the machine |00 comprises paper supporting and guiding mechanism IIO and paper cutting mechanism II I, both carried by the carriage |03, and paper position testing mechanism II2 by the subframe |02.

Referring now more particularly to Figs. 1 to 3, inclusive, of the drawings, the carriage |03 is supported by the main frame IIII upon structureY including the rear carriage rail II3 and comprises a marginal stop rack ||4 extending between the end walls |08. The marginal stop 1 rack carries two adjustable marginal stops II5 and I I6, while the rearrcarriage rail I I3 supports a fixture |I| upon which a tabulating lever IIB is pivotally mounted by a pin I I9. The tabulating lever I8 carries an inturned projection I 20 which cooperates with the lower ends/of the two stops II5 anda] I6, whereby the marginal stops I I5 and I I 6 are effective to establish the limit of travel of the carriage |03 in the two directions, the marginal stops ||5 and |I6 respectively comprising right-hand and left-hand marginal stops for the carriage |03, as viewed from the front of the machine |00.

The tabulating lever ||8 is mounted upon the pin I I9 for both limited sliding movement transversely of the machine in the direction of the rear carriage rail II3 and limited rocking movement toward and away from the rear carriage rail I I3. As viewed in Fig. 2, the tabulating lever |I8 is biased toward the left by a coil spring I2I extending between the fixture ||1 and the tabulating lever II8, and also in a clockwise direction about the pin IIS by an arrangement comprising a rocking lever |22 pivotally mounted by a screw |23 upon the rear carriage rail |I3. More particularly, the rocking lever |22 rests upon a plate |24 xed to the top surface of the rear carriage rail ||3 and comprises two arms |25 and |26. The lever |22 is biased in a counterclockwise direction about the screw |23, as viewed in Fig. 2, by an arrangement comprising a coil spring |21* surrounding the screw |23 and extending between the plate |24 and the arm |26; the arm |25 of the lever |22 being provided with an upstanding projection |28 engaging a leaf spring |29 secured to the adjacent end of the tabulating lever II8. At this point it is noted that the arm |26 of the lever |22 carries an upstanding dog |30 which cooperates with a part of the paper cutting mechanism III, in a manner more fully explained in the above-mentioned copending application.

Also associated with the right-hand end of the tabulating lever ||8 is a bell crank I3| pivotally supported upon the main frame IOI and biased away from the end of the tabulating lever I I8 by a coil spring |32, the coil spring |32 extending between the bell crank I3I and the main frame 'IOI. The bell crank I3I may be moved against the bias of the coil spring |32 toward the end of the tabulating lever II8, thereby to rock the tabulating lever II8 in the counterclockwise direction about the pin IIS, as viewed in Fig. 2, under the control of a strap |33 secured thereto; the strap |33 being operated by the power roll of the machine |00 when the tabulating operating key is actuated by the associated operating magnet. Further the rear carriage rail I|3 carries a latch |34 which is pivotally mounted upon a pin |35 and biased toward an abutment |36 lformed on the left-hand end of the tabulating lever I I8. Further it is noted that the left-hand end of the tabulating lever ||8 carries an abutment I 31 which also cooperates with the upstanding projection |28 provided on the arm |25 ol the rocking lever |22.

Considering now the general operation of the machine |00, the carriage |03 normally occupies its right-hand marginal position, as viewed from the front, as determined by the position of the right-hand marginal stop I I upon the associated marginal stop rack II4. Asthe operating mag-V nets are selectively energized the corresponding operating keys are actuated, whereby the corresponding type levers |04 are selectively clutched to the power roll, assuming that the operating motor is running. As each type lever |04 is clutched to the power roll it is operated toward the platen roll I 09 into striking engagement with the paper stock carried thereby in order to cause the associated type character to be printed thereon. The type lever is then automatically i declutched from the power roll and is returned to its normal position; whereupon the carriage |03 is moved one space toward the left. When the return and line space operating magnet is energized the associated operating key is actuated, whereby the carriage return and line space mechanism is rst clutched to and then declutched from the power roll in order to cause the carriage |03 to be returned to its normal right-hand marginal position, as determined by the position of the right-hand marginal stop ||5 upon the marginal stop rail II4, and to cause the platen roll |09 to be line spaced.

When the tabulating magnet is energized the associated tabulating operating key is actuated, whereby the tabulating mechanism is rst clutched to and then declutched from the power roll, whereby the strap I33'is operated in order to cause the bell crank I3I to be pivoted against the bias of the coil spring |32 into engagement with the right-hand end of the tabulating lever ||8. When the right-hand end of the tabulating lever ||8 is thus depressed by the bell crank I3| the tabulating lever |I8 is rocked in the counterclockwise direction about the pin |I9, as viewed in Fig. 2, against the bias of the rocking lever |22. Also when the tabulating lever I I8 is rocked in the counterclockwise direction about the pin ||9 the latch |34 rides behind the abutment |36 provided on the left-hand. end of the tabulating lever ||8 in order to latch the tabulating lever II8 in the last-mentioned position and to release the carriage |03; whereby the carriage |03 is automatically moved toward the left, as viewed from the front of the machine |00. Also at this time the rocking lever |22 is rotated in the clockwise direction about the screw |23, as viewed 1n Fig. 2, against the bias of the coil spring I2`| due to the action of the leaf spring |29 carried by the left-hand end of the tabulating lever I'I8 upon the upstanding projection |28 carried by the arm |25 of the rocking lever |22. When the'rocking lever |22 is thus rotated in the clockwise direction the upstanding dog |30 carried by, the arm |26 thereof is moved toward the platen roll |09 into cooperating relationship with respect to the paper cutting mechanism III, in a manner more fully explained in the above-mentioned copending application.

When the carriage |03 is moved toward the left, as viewed from the iront of the machine |00, to its left-hand marginal extremity, the lefthand marginal stop I|6 carried by the marginal stop rack |I4 engages the inturned projection |20 carried on the left-hand end of thetabulatinglever IIB; whereby the tabulating lever I IS is moved toward the right, as viewed in Fig. 2. When the tabulating lever |I8 is moved toward the right, as viewed in Fig. 2, against the bias of the coil spring I2I, the pin IIB permitting this movement'of the tabulating lever |I8 as previously noted, the latch |34 rides from behind the abutment |36 provided on the left-hand end of the tabulating lever |I8. When the latch |34 rides from behind the abutment |36 provided on the left-hand end of the tabulating lever |I8,

thereby unlatching the same, the tabulating lever I I8 is rotated in the clockwise direction about the pin IIB, as viewed in Fig. 2., due to the bias exerted on the leaf spring |29 carried on the left-hand end thereof by the upstanding projection |28 carried on the arm |25 of the rocking lever |22. More particularly, the rocking lever |22 is rotated in the counterclockwise direction about the screw |23, as viewed in Fig. 2, by the coil spring |21; whereby the upstanding dog |30 carried by the arm |26 of the rocking lever |22 is moved out of cooperating engagement with respect to the paper cutting mechanism III, for

a purpose more fully explained in the abovementioned copending application. At this time the return and line space operating magnet may be again energized in order to effect the return of the carriage |03 to its normal right-hand marginal extremity, in the manner previously explained.

Referring now more particularly to Figs. l, 4, 5, and 6 of thedrawings, it is noted that the paper supporting and guiding mechanism I I comprises a supporting bracket |50 having inturned ends disposed between and removably secured to the end walls |08 of the carriage |03 by a plurality of screws |52. Also the mechanism I|0 comprises an upstanding channel-shaped body |53, the upper end of which terminates in a substantially horizontal and inwardly disposed wall |54. Also the body |53 comprises side flanges |55, the lower ends of which terminate in outwardly and downwardly extending arms |56 -arranged in substantially parallel spaced-apart relation. A shaft |51 extends through openings provided adjacent the outer ends of the arms I 56 and is provided with removable knurled thumb, lnuts |58 threaded on the opposite ends thereof;

the shaft |51 being adapted to support the spool |59 of a roll of ribbon-like paper stock |60. Also a substantially channel-shaped plate |6| is secured to the lower surface of the wall |54 by a number of rivets |62, the plate |6| having upstanding side flanges |63. The side flanges |63 of the plate |6| constitute a continuation of the side flanges |55 of the body |53, whereby a smooth guide channel is provided for the ribbon of paper stock from the roll |60.

Also the mechanism |0 comprises a substantially U-shaped'supporting bracket |64 having upwardly and inwardly directed arms |65 arranged in parallel spaced-apart relation. The arms |65 constitute a support for the paper cut- Y ting mechanism and carry two screws |66 by means of which the mechanism is removably secured in place. More particularly, two aligned notches |61 are formed in the side flanges |55 of the body |53 and receive the center portion of the supporting bracket |50, while the center portion of the supporting bracket |64 engages the rear wall of the body 53; the body |53 and the brackets |50 and |64 being removably secured in assembled relation by two screws |68. More specifically, the two screws |68 -extend through two spaced-apart holes provided in the supporting bracket |50 and are threaded into aligned tapped holes provided in the supporting bracket |64; whereby the body |53 is securely clamped between the brackets |50 and |64. Thus it will be understood that a narrow upwardly extending passage is formed between the bottom wall of the body |53 and the adjacent wall of the bracket |50Y and between the side anges |55 in order to receive and guide the ribbon of paper Stock from the roll |60.

Further mechanism I I0 comprises a paper tensioning element |69 including a base plate |10 and a substantially L-shaped inwardly disposed leaf spring member secured together by` a plurality of rivets or the like |12. The lower end of the base plate is provided with an inwardly directed flange |13 which overhangs two aligned and spaced-apart pins |14 carried by the side flanges |55; thereby to provide a pivotal mounting for the lower end of the paper tenrocking lever .|221

plate |10; the opening formed in the base plate |10 comprising an enlarged central hole |16 and aA connecting restricted slot |11. Further the outer end of the screw |15 carries a thumb nut |18 which engages the base plate |10. This arrangement permits ready removal of the paper tensioning element |69 when the thumb nut |18 is sufficiently loosened due to the fact that the thumb nut |18 will pass through the hole |16 formed in the base plate |10 incident to lifting of the base vplate |10. More specifically, when the thumb nut |18 is loosened the base plate |10 may belifted and pulled rearwardly in order to cause the inwardly directed flange |13 to disengage the pins |14; whereby the thumb nut |16 maybe passed through the hole |16 formed in the base plate |10, in an obvious manner.

Further it will be understood that the leaf spring member |1| engages the ribbon of paper stock adjacent the knee between the body |53 and the wall |54, thereby to tension the ribbon of paper stock; the amount of tensioning thereof depending upon the pressure exerted upon the paper tensioning element |69, which in turn may be oppositely determined by tightening and loosening the thumb nut |18 in an obvious manner.

Referring now more particularly to Figs. 1 and 6 of the drawings, it is noted that the paper cutting mechanism comprises a substantially channel-shaped base 200 having downwardly turned side flanges 20| and an elongated rearwardly and downwardly extending paper chute 202 having upwardly turned side flanges 203; the base 200 and the paper chute 202 being suitably secured together by rivets or the like.. The base 200 is secured to the two arms |65 of the supporting bracket |64 by means of the two screws |66 and two thumb nuts 204 threaded on the outer ends of the screws |66; the screws |66 passing through holes 205 provided in the base 200; Also a narrow elongated transverse slot is formed in the base 200 adjacent the front edge thereof. At this point it is noted that the front end of the paper chute 202 terminates adjacent the rear edge of the slot formed in the base 200 and that the paper guiding structure is secured to the base 200 adjacent the front edge of the slot formed therein by rivets or the like. More particularly, the paper guiding structure comprises a bottom wall having a downwardly and forwardly extending lip and a top plate 209 having downwardly turned side flanges 2|0. The paper guiding structure secured to the-base 200 forardly of the slot formed therein and the paper chute 202 secured to the base 200 rearwardly of the slot formed therein are arranged in alignment, whereby the ribbon of paper stock coming from the platen roll |08 of the machine |00 is fed through the paper guiding structure and across the slot formed in the base 200 and into the paper chute 202.

The paper cutting mechainsm is operated in a manner more fully explained in the abovementioned copending application due to the cooperation between the downwardly extending lug 220` carried by'the xture 2|1 and the upwardly projecting dog |30 carried on the arm |26 of the' More particularly, the dog |30 latches/,the lug 220 when'the carriage |03 of the machine |00 occupies an operated position away/fromth ft-hand marginal Stop position ,thereof i ent to the operation of the tabulatsioning element |69. Also a rearward1y/extend-"/1 m cha/nism/` When'l the tabulating mecha ing screw |15 is fixed to the bracket |50 and/- 4ni/sm',isthus'perated the dog |30 latches the lug extends through an opening formed in the base l2/0.V whereby the/movable knife support 2I5 is' effectively locked to the frame and the carriage |03 is returned to the left, as viewed from the front of the machine, to its left-hand marginal stop position. Accordingly the base 200 is moved from the right toward the left, as viewed from the front of the machine, while the movable knife support 2|5 is retained latched in a stationary position -by the cooperation between the dog |30 and the lug 220. This movement of the base 200 toward the left effectively draws the knife blade 225 across the slot formed therein, whereby the ribbon of paper stock is severed in the manner explained above.

Referring now more particularly to Figs. 1, 7 and 8 of the drawings, it is noted that the paper position testing mechanism ||2 comprises a base plate 250 which is removably secured to the subframe |02 of the machine |00 by means of a number of screws or the like rearwardly of the casing structure |05. Also the mechanism ||2 comprises electromagnetic structure including a eld element 25|, a core 252, an armature 253 and a winding 254 carried by the core 252; the eld element being secured to the base plate 250 by two screws 255. The armature 253 is pivotally mounted upon a pivot pin 256 carried by a bracket 251 which is in turn secured to the field element 25| by a screw 250. Further the base plate 250 carries a plate 259 which is adapted to support a removable housing, not shown, for the mechanism ||2. Further the armature 253 is provided with a rearwardly extending arm 260 which carries an insulator 26| on the outer end thereof; the insulator 26| cooperating with a suitable set of switch springs 262 carried by the eld element 25|.

Further a bar 263 is secured to the armature 253 by two screws 264 and is provided with an elongated slot 265 in the upper end thereof. The upper end of the bar 263 carries a paper roll contact rod 266 which extends through the slot 265 formed therein and is threaded into a tubular member 261. upon the rod 266. The arrangement above described permits ready adjustment of the rod 266 in the vertical direction toward and away from the end of the bar 263; also this arrangement permits ready adjustment of the end of the rod 266 toward and away from the bar 263. Accordingly the rod 266 may be readily adjusted toward and away from the axis of the shaft |51 supporting the roll of paper |60 in order to adjust the mechanism I2 to different sizes of cores of spools upon which the roll or' paper |60 is wound. Also the rod 266 may be readily adjusted toward and away from the end of the paper roll |60 in accordance with the normal right-hand marginal stop position of the carriage |03 of the machine |00 as determined by the position of the righthand marginal stop ||6 carried by the marginal stop rack ||4.

It will be understood that when the carriage |03 of the machine |00 occupies its normal rightvhand marginal stop position, as viewed from the front of the machine |00, the roll of paper |60 carried by the paper supporting and guiding mechanism ||0 engages the end of the rod 266, thereby to move the armature 253 of the paper position testing mechanism ||2 toward the core 252. Further it will be understood that, when the winding 254 is energized, the armature 253 is attracted and moved toward the core 252. When the armature 253 is moved toward the core 252 the arm 260 carried thereby causes the insulator Also a lock nut 268 is threaded v 26| to control the set of switch springs 262 for signaling purposes.

On the other hand, when the carriage |03 of the machine is moved away from its right-hand` marginal stop position, as viewed from the front of the machine |00, the roll of paper .|60 carried by the paper supporting and guiding mechanism ||0 disengages the end of the rod 266, whereby the set of switch springs 262 tends to move the armature 253 away from the core 252 due to its resiliency. Similarly, when the winding 254 is deenergized the set of switch springs 262 tends to move the armature 253 away from the core 252. When the armature 253 is moved away from the core 252 the set of switch springs 262 is controlled in the opposite sense for signaling purposes. Thus it will be understood that, when the winding 254 is energized or the roll of paper |60 engages the rod 266, the armature 253 is moved toward the core 252; and that, when the winding 254 is deenergized and the roll of paper |60 disengages the rod 266, the armature 253 is moved away from the core 252; whereby the set of switch springs 262 is selectively controlled.

During the operation of the machine |00, when the carriage |03 thereof occupies its normal righthand marginal stop position, as viewed from the front of the machine |00, and there is ample paper stock upon the paper roll |60, the rod 266 is engaged, thereby to move the armature 253 toward the core 252. When the machine |00 is seized for use the winding 254 is energized, thereby to retain the armature 253 attracted toward the core 252. Subsequently, after the complete operation of the machine |00, the carriage |03 thereof is operatedtoward its right-hand marginal stop position andthe winding 254 is deenergized. At this time the armature 253 remains in its position adjacent the core 252 only in the event that the carriage |03 of the machine |00 is moved fully to its right-hand marginal stop position and in the additional event that there is adequate paper stock upon the roll |60 in order to engagethe rod 266. Hence it will be understood that, at the conclusion of the operation of the machine |00, in the vent the carriage |03 thereof is not returned completely to its right-hand marginal stop position or there is inadequate paper stock upon the roll 60, the rod 266 is not engaged and the armature 253 is moved away from the core 252; whereby a suitable signal is controlled in order toindicate that one of the conditions mentioned above exists and that the machine |00 is accordingly not in readiness for subsequent reoperation.

Again considering Figs. l and 6 of the drawings, it is pointed out that, in the machine |00, the ribbon of paper stock extends from the roll |60 rotatably supported by the shaft |51, 4forming a part of the paper supporting and guiding mechanism ||0', up through the guide channel formed between the supporting bracket |50 and the upstanding channel-shaped body |53 and then in a substantially horizontal direction across the horizontal wall |54 to a horizontal transversely extending paper guide 300 incorporated in the structureof the carriageA |03. The ribbon of paper stock continues from the paper guide 300 between the platen roll |09 and a horizontal transversely extending pressure roll paper shield 302 is suitably secured by a series to be contacted by the type levers |04. The tension exerted upon the ribbon of paper stock feeding from the roll |60 and between the platen roll` |09 and the pressure roll 30| may be ad-` justed by tightening or loosening the thumb screw |18 in order to cause the leaf spring member 1| to exert more or less pressure upon the ribbon of paper stock as it passes over the knee disposed between the upstanding channel-shaped body |53 and the horizontal wall |54, in the manner previously explained. After the ribbon of paper stock passes between the paper shield 302 and the plate roll |09 it extends into the paper guiding structure, forming a part of the paper cutting mechanism and including the bottom wall 201 and the top wall 209, and over the slot 206 formed in the base 200 into the paper chute 202. The strip of the ribbon of paper stock extending beyond the slot 206, formed in the base 200, and into the paper chute 202 may be readily severed by operating the paper cutting mechanism in the manner previously explained, whereby the severed strip of the ribbon of paper stock may slide down the downwardly and rearwardly inclined paper chute 202 into a suitable receptacle. At this point it is noted that the guiding surfaces of the paper supportingr and guiding mechanism 0, as well as the guiding surfaces of .the paper cutting mechanism are highly polished in order to minimize the frictional drag exerted upon the ribbon of paper stock passing thereover. Also the interior surface of the paper chute 202, forming a part of the paper cutting mechanism is highly polished, whereby the strip of Asevered paper stock may slide down the inclined'paper chute 202 due to the action of gravity and be received by a suitable receptacle.

At this point it is noted that both the shaft l 51, forming a part of the paper supporting and guiding meahnism ||0, and the paper chute 202, forming a part of the paper cutting mechanism are disposed rearwardly of the rear wall of the subframe |02. More particularly, the arms |56 of the paper supporting and guiding mechanism ||0, which support the shaft |51, extend through a rectangular opening 30G formed in the rear wall of the subframe |02; the opening 306 formedin the rear wall of the subframe |02 extending transversely thereacross a distance suincient to accommodate the normal travel of the carriage |03 of the machine 00. The paper chute 202 of the paper cutting mechanism extends 4over the rear marginal edge of the main frame whereby the receptacle which is adapted to receive thesevered strips of the ribbon of paper stock may be disposed rearwardly and clear of the machine |00. i

Considering now the operation of the tabulating mechanism incorporated in the machine |00 in conjunction with theoperation of the paper cutting mechanism I, reference is again had to Figs. 1 to 3, inclusive, of the drawings. At the conclusion of a complete printing operation of the machine |00 the carriage |03 occupies a position displaced from the right-hand marginal stop position thereof, as viewed from the front of the machine |00, corresponding to one space beyond l the last character printed upon the last line of the section of paper stock appearing in the slot 305 formed in the paper shield 302, as will be readily understood. At this time the return and line space operating magnet is energized a plurality of times, whereby the carriage |03 is returned to its normal right-hand stop position and the platen roll |09 is spaced a corresponding plurality of times; whereby the section of paper stock upon whichV the printing matter appears is fed from between the paper shield 302 and the platen roll |09 throughthe paper guiding structure, forming a part of the paper cutting mechanism and beyond the slot formed inthe base 200 and into the paper chute 2h02. At this time the carriage |03 of the machine |00 occupies its'normal right-hand marginal stop position and the tabulating operating magnet is energized; whereupon the cally moved from its right-hand marginal stop position toits left-hand marginal stop position.

More particularly, when the tabulating mechanism incorporated in the machine |00 is thus operated,` the rocking lever |22 is rotated in the clockwise direction about the screw |23, as viewed in Fig. 2, by the operation of the tabulating lever H8, and the tabulatinglever ||8 is restrained in its operated position by the latch |34, in the manner previously explained. When the rocking lever |22 is rotated in the clockwise direction about the screw |23, as viewed in'Fig. 2, the dog |30 carried by the arm |26 thereon is moved forwardly toward the platen roll |09 and into such a position that it is disposed :in the path of movement of the downwardly projecting lug 220 formed on the fixture 2|1 carried on the left end of the movable knife support 2|5, as shown in Fig. 6. As the carriage |03 moves toward the left, the lug 220 hangs upon the dog |30, whereby further movement of the knife support 2|5 is arrested. However, the carriage |03 continues to move toward the left, whereby the remainder of the cutting mechanism including the base 200, is moved therewith. When the base 200 is thus moved toward the left, while the knife support 2|5 is held in a stationary position, the knife blade 225 is effectively drawn through the slot formed in the base 200, whereby the section of the ribbon of paper stock disposed beyond the slot and in the paper chute 202 is severed. The last-mentioned section of the ribbon of paper stock includes the matter printed thereupon due to the last operation of the machine |00. Accordingly, the severed strip of the ribbon of paper stock including the printed matter, due to the last operation of the machine |00, comprises a ticket which slides down the paper chute 202 into a suitable receptacle.

Subsequently, when the carriage |03 is comthe tabulating lever I I8, in the manner previously l, explained. At this time, when the tabulating lever ||8 is released, the urocking lever |22 is rotated in the counterclockwise direction about the screw |23, as viewed in Fig.2, yby the coil spring |21, whereby the upstanding dog |301 provided on the arm |26 disengages the downwardly extending lug 220 carried by the xture 2|1, forming a part of the movable knife support 2|5. When the dog |30 disengages the lug 220 the knife support 2|5 is released and is returned toward the left to its normal position. At this time, the paper cutting mechanism HI has completed its operation and occupies its normal carriage 03 is automati-V rides from behind theposition. The return and line space operating magnet is then energized in order to cause the carriage |03 to be returned to its normal righthand marginal stop position. At this time the machine lll is completely released and is available for further use for the next printing operation.

The operation of the paper position testing mechanism l|2 incident to the operation of the machine is fully described above, and in the interest of brevity is not again repeated.

While one embodiment of the invention has ben disclosed, it Willb understood that various modifications may be made therein which are within the true spirit and scope of the invention.

What is claimed is:

1. A business machine comprising printing mechanism, a movable member having a normal position and adapted to support a supply of paper stock, means for feeding said paper stock from s aid member into printing relation to said printing mechanism, an electromagnet including field structure provided with a Winding and a movable armature, said armature being biased to a first position and operative to a second position, the operation of said armature to its second position being controlled in accordance with the energization of said winding only when said machine is being operated, means including a paper testing element adapted to cooperate with said supply of paper stock for operating'said armature to its second position only when said member occupies its normal position and sail electromagnet winding is denergized` and contacts controlled for signal purposes in'response to the response to the movement of said armature to its first position in the event that said winding is deenergized and said armature is not maintained in its second position by said last mentioned means.

4. A business ymachine comprising printing mechanism, a movable shaft having' a normal position and adapted to support a hollow roll of paper stock, means for feeding said paper stock from said roll into printing relation to said printing mechanism, an electromagnet including field structure provided with a Winding and a movable armature, said armature being biased to a rst position and operative to a second position, the operation of said armature to its second position being controlled in accordance with the energization of said Winding during operation of said machine, means including a testing element adapted to cooperate with the edges of the paper stock forming the side of said roll for moving said armature to its second position only both movement of said armature to its first position.

2. A business machine comprising printing mechanism, a member adapted to support a supply of paper stock, means for feeding said paper stock from said member into printing relation to said printing mechanism, an electromagnet including field structure provided with a winding and a movable armature, said armature being biased to a first position and operative to a second position, the operation of said armature to its second position being controlled in accordance with the energization of said winding only when said machine is being operated, means including a paper testing element adapted to cooperate With said supply of paper stock for moving said armature to its second position only when said member supports an adequate supply of said paper stock and said winding is deenergized, and contacts controlled for signal purposes in response to the movement of said armature to its rst position.

3. A business machine comprising printing mechanism, a, movable member having a, normall position and adapted to support a supply of paper stock, means yfor feeding said paper stock from said member in printing relation to said printing mechanism, an electromagnet including field structure provided with a Winding and a movable armature, said armature being biased to a first position and operative to a second position, the operation of said armature to its second position being controlled in accordancel with the energization of said Winding responsive to said machine being taken for use, means incuding a paper testing element adapted to cooperate with said supply of paper stock for movingr said armature to its second position only both when said member occupies its normal position and supports an adequate supply of said paper stock, and contacts controlled for signal purposes in when said shaft occupies its normal position and said roll contains an adequate supply of paper stock, and contacts controlled for signal purposes inresponse to the movement of said armature to its rst position in the eventsaid last mentioned means has failed to maintainY said armature in its second position after `said winding is deenergized.

'5. A business machine comprising printing mechanism, a movable shaft having a normal position and adapted to support a hollow roll of paper stock, means-for feeding said paper-took from said roll into printing relation t'o said printing mechanism, an electromagnet including field structure provided with a Winding and a movable armature, said armature being biased to a first position and operative to a second position, the operation of said armature to itsl second position being controlled in accordance with the energization of said winding during the period of time said machine is being operated, means including a testing element carried by said armature and/adapted to cooperate with the edges of the paper stock forming said roll for maintaining said armature in its second position only both when said shaft occupies its normal position and said roll contains an adequate supply of paper stock, vmeans for adjusting said testing element toward and away from the edge of said roll, thereby to accommodate different normal positions of said shaft and corresponding different widths of said roll, means for adjusting said testing element toward and away from the, axis of testing device having a first position and a second position, said relay being energized .during f the period of time said machine is being operated for ,maintaining said testing device in said first position, said carriage after said relay has been deenergized 'adapted to maintain said testing device in said first position in the event said carriage has restored to its normal position, and contacts controlled b'y said testing device when moved to said second pdfsition for indicating that said carriage has failed to restore to normal.

7. In a printing machine, a movable carriage having a normal position, a testing device having a first position and normally biased to -a second position, said carriage in its normal position adapted to maintain said device in sad rst position, means for maintaining said device in said rst position while said carriage is in an olf-normal postion during the period of time said machine is being operated, and means controlled by said testing device in its second position for` indicating that said carriage is in an oil-normal position. i

' 8. In a printing machine, a movable carriage having a normal position, a testing device having a first position and normally biased to Va second position, said carriage in its normal position maintaining said device in said first position, Ameans for maintaining said device in said first position while said carriage is in an oilnormal position during the period of time said machine is being operated, and means controlled by said testing device responsive to the failure of said carriage to occupy its normal position at the conclusion of the operation of the machine for indicating that said carriage is in an off-normal position.

9. In a typewriter, a movable carriage having a normal position, a testing device having a first position and a second position, an electromagnet energized only during the typing operation of said machine to maintain said testing device in said rst position, means supported by said carriage/ to maintain said testing device in said first position during the period of time said machine remains unoperated, and means controlled by said testing device when moved to said second position for indicating that said carriag has failed to return to its normal position af, er the typing operation has been terminated.

10. In an electric typewriter, a movable carriage having anormal position, a support for a supply of paper stock carried by said carriaga/ a testing device having a rst position and a second position, an electromagnet normally energized during the typing operation of said machine and deenergized at the conclusion of the typing operation, said electromagnet in its energised position maintaining said device in said first position, sad testing device being maintained in said rst position by cooperation with the edges of the paper supply when said carriage is in its normal position, and means effective responsive to the deenergization of said electromagnet` for moving said testing means to said second position for signaling purposes in the event either said carriage fails to occupy its normal position at the conclusion of the typl.a normal position, a supply of ypaper stock caring operation or said supply of paper stock is inadequate for -further typing operation of said machine.`

11. In an electric typewriter, a movable carriage having a normal position, a paper roll carried by said carriage, a testing element adapted to cooperate with the edges of the paper constituting said paper roll, said testing element having a first and a second position, an electromagnet adapted tomaintain said testing element in said first position during the .period of time said machine is being operated, said paper ^roll adapted to maintain said element in its rst position during the period of time said machine remains unoperated with` said carriage in its normal position, and means controlled in the event the supply of paper on said paper roll becomes inadequate for moving said element to said second position to give an indication thereof.

12. In a typewriter, a movable carriage having ried by said carriage, a tester for determining the adequacy of the supply oi paper stock when said carriage is in said normal position, a magnet for maintaining said tester in a rst position only during the time saidv machine is performing a typing operation, means for restoring said carriage to its normal position after said typing operation has been completed, and contacts controlled by said tester when said carriage is in its normal position in'the event said supply of paper stock is inadequate for another typing operation for completing a signal indicative of the inadequacy of said paper supply.

13. In a business machine comprising a roll of paper and a movable carriage causing relative movement between an operating mechanism and the paper, a testing device, a magnet, means for operating said magnet during operation of the machine to prevent the functioning of said dcvice, said device'rendered effective upon'cessation of operation ofthe machine to operate a signal in the event the paper supply is low or the machine has failed to return to normal position.

14. In a business machine comprising a roll of paper and a movable carriage, causing relative movement between an operating mechanism and the paper, a testing device for determining that the carriage is in normal position and that there is an adequate supply of paper on the roll, andV means for rendering said testing device inefl fective during operation of the machine and for rendering said device effective upon cessation of operation of the machine to operate a signal in the event the supply of paper is inadequate or the carriage has failed to return to normal position. f

JOHN E. OSITLINE. 

